Arch and arch bricks



A. H. WlLLETT ARCH AND ARCH BRICKS April 21, 1925.

2 Sheets-Sheet '1 Filed D96. 1921 'VVE T R 4%1/4 hf zz A TTORNE Y8 1,534,474 A. H. WILL ETT ARCH AND ARCH BRICKS v Filed Dec 28; 1921 2 ShQets-She'et 2 April 21; 1925.

, ATTORNEY$ indicated by the Patented Apr. 21, 1925.

v' UNITED STATES PATENT OFFICE.

ALFRED H. WILLETT, OF WEST NEW YORK, NEW JERSEY, ASSIGNOR TO AMERICAN ARCH COMPANY. A CORPORATION OF DELAWARE.

ARCH AND ARCH BRICKS.

Application filed December 28, 1921. Serial No. 525,394.

To all whom, it may concern:

Be it known that I, ALFRED lViLLn'rT, a citizen of the United States, residing at Vest New York, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Arches and Arch Bricks, of which the following is a specification.

This invention has reference to an improved construction of refractory arches such as are particularly useful in connection with locomotive fire box structures although it is capable of application elsewhere.

One of the objects of this invention is to provide an arch structure which is adaptable to various spacings of supporting tubes such as are commonly used in this type of apparatus and to make provision for such adaptation without requiring the employment of a number of different designs or sizes of refractory block, the arrangement of the block or brick being such that the several units ,will automatically position themselves so as to compensate for variations in spacing while the blocks themselves are of uniform pattern.

The above as, well as such other objects as may hereinafter appear, I attain by means of a construction which I have illustrated in preferred form in the accompanying, drawings, wherein Figure 1 is a longitudinal sectional view through the lire box of a l-ocon'iotive showing my improvement applied thereto; Figure 2 is a sectional view taken on the line 2-2 of Figure 1; Figure 3 is a horizontal sectional view partly taken at an angle as line 3-3 of Figure 1; and Figure 4 shows one of the blocks or bricks in perspective indicating more clearly the detailed structure of the same.

Referring now more particularly to Fig ures 1 and 2, it will be seen that I have therein shown a fire box 5 having a rear water leg 6, a crown sheet 7 and a flue sheet 8 with a front water leg 9 and a plurality of arch supporting tubes 10 extending from the front water leg upward and rearward to the rear water leg 6 at a point below the crown sheet.

Upon these tubes I have mounted a refractory arch composed of a plurality of blocks or bricks 11 which, as indicated in the perspective view in Figure 4, are recessed as shown at 12 to provide a seat which is rested against the supporting tube and which have side inclined surfaces 13 and a fiat upper surface 14, the surfaces 13 being oppositely disposed on projecting wings tvhigh extend laterally from the body of the )l'lC r.

At one end of each block or brick I may provide a projection 15 which is adapted to enter a corresponding or cooperating recess 16 on the adjacent end of the next brick, each brick thus having at one end the projeetion 16 so that when the bricks are assembled to form an arch as shown in the other figures the projections will engage the recesses and hold the parts in proper relative position and against rocking movement and displacement, the supporting tube being embraced by the recesses 12 on the under faces.

-The recess 16 and the projection 15 are not essential to the invention but may be used if desired.

As will appear more especially on Figures 2 and 3, I arrange the bricks with those which are supported by the tubes in a line having their inclined surfaces 13 presented upwardly and upon such inclined surfaces of adjacent rows row of bricks-with the inclined surfaces-directed downwardly and the curved channels or recesses 12 upstanding and this engagement of the complementary inclined surfaces 13 of the two rows automatically compensates forvariations in the spacing be tween the centers of the tubes so that with a single pattern of brick I can provide a refractory arch structure which will take care of a wide variation in dimensions. In other words, the inverted brick are wedged between those resting on the tubes and are selfradjusting to different spacings of the tubes' i As indicated in Fi ure 3 the bricks which are supported upon the tubes are preferably arranged with the recesses 16 adjacent to the flue sheet and the intermediate row of bricks is placed somewhat'above and to the rear so as to leave openings as at 17 for the passage of gases near the flue sheet and to provide also that the joints between adjacent bricks should be in staggered relation as plainly shown in Figure 3.

15 and at the other end the recess of bricks, I mount anotherill) 1 claim: I

Em arch built of a plurality of ble bricks of a single pattern, each of said bricks having on one face a supporting seat and on the other face and on each side of the supporting seat a brick engaging sur- :t'ace slanting inwardly from the face with the supporting seat, certain of the bricks in the arch being arranged in rows on the supports and others being arranged in rows other side down on the brick engaging surfaces of the first mentioned rows, the bricks so arranged being adjustable to different spacings between supports.

2. An invertible block for use in the construction of tube supported arches having a tube engaging face and a block engaging face, said block being adapted to rest on a tube when the tube engaging face is placed tea e474 downwardly and to rest on the brick engagface of another similar block when the block engaging face is placed downwardly.

3. arch construction for tube-equipped fire boxes including a plurality of substan tially counterpart invertible bricks, each of tubes having the tube engaging recess down- Wardly and those which come opposite the spaces between tubes having the brick supporting surfaces downwardly and resting on the brick supporting surfaces of the tube engaging bricks.

In testimony whereof, I have hereunto signed my name.

ALFRED H. VILLETT. 

